Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 2.956 Scientists Citation Rankings - 2025
Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Hepatology Gastroenterology Infectious Disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,864
21,270
0.973
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* Total Citation Counts Rankings
Ranking Based On Selection: 2
Manufacturing Processes
Machining
Heat Transfer
Nanomaterials Applications
Renewable Energ
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,144
14,712
0.971
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Polymer Chemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,698
6,991
0.476
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Organic Chemistry
antiviarl
heterocyclic chemistry
organic sysenthsis
nanno composit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,656
9,215
0.791
* Total Citation Counts Rankings
Ranking Based On Selection: 5
algae
pollution
biodiesel
algal phsyiology
antimicrobia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,853
8,374
0.772
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Biomedical Engineering
Medical Image Processing
Computer-aided Diagnosis System
Smart Antenna
DOA estimation& Localizatio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,614
7,246
0.683
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Immunolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,236
4,110
0.402
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Biophysics
Astrophysics
Radiation Physic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,226
2,558
0.250
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Phycology
Environmental Engineering
Biofuel
Waste recyclin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,016
9,014
0.900
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* Total Citation Counts Rankings
Ranking Based On Selection: 10
Innovative biological wastewater treatment
Bioremediation
Hazardous waste Valorization
Biomas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,720
9,459
0.973
* Total Citation Counts Rankings
Ranking Based On Selection: 11
physics
Solar Energy
Material Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,473
3,897
0.460
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,215
5,040
0.614
* Total Citation Counts Rankings
Ranking Based On Selection: 13
MesoMOFs
Nanoporous carbons
Gas sensors
Water treatment
Supercapacitor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,863
3,764
0.479
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Experimental Physic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,342
4,346
0.592
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Renewable Energy
Solar Desalination
Air Conditioning
Solar Drye
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,123
6,545
0.919
* Total Citation Counts Rankings
Ranking Based On Selection: 16
drug delivery
Formulation science
Co-crystallization
liposomes
niosome
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,474
2,937
0.454
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Microbiology
Environmental pollution
Biochemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,226
5,209
0.997
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Internal Combustion Engine
Combustion Systems
Energy Systems Analysi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,988
4,774
0.957
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Prof. of Microbiology (Mycology-Enzymology-Yeast-Molecular Biology-Drug development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,964
3,986
0.803
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Renewable Energy
Power System
Optimization
GIS
Desalinatio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,870
4,807
0.987
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Environmental Botan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,834
2,556
0.529
* Total Citation Counts Rankings
Ranking Based On Selection: 22
inorganic chemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,730
715
0.151
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Biomarkers
Clinical Biochemistry
Nephrology
AKI
Cellular Signallin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,714
4,554
0.966
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,558
2,089
0.458
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,543
3,299
0.726
* Total Citation Counts Rankings
Rankings
38,353
48
1
Ranking Based On Selection: 1
Sherief Abd Elsalam
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,864
21,270
0.973
Hepatology Gastroenterology Infectious Disease
* Total Citation Counts Rankings
Rankings
63,119
77
2
Ranking Based On Selection: 2
Ammar H Elsheikh
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,144
14,712
0.971
Manufacturing Processes
Machining
Heat Transfer
Nanomaterials Applications
Renewable Energ
* Total Citation Counts Rankings
Rankings
65,606
79
3
Ranking Based On Selection: 3
El Refaie Kenawy
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,698
6,991
0.476
* Total Citation Counts Rankings
Rankings
87,614
121
4
Ranking Based On Selection: 4
Ahmed A El Barbary
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,656
9,215
0.791
Organic Chemistry
antiviarl
heterocyclic chemistry
organic sysenthsis
nanno composit
* Total Citation Counts Rankings
Rankings
95,322
131
5
Ranking Based On Selection: 5
Mostafa El Sheekh
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,853
8,374
0.772
algae
pollution
biodiesel
algal phsyiology
antimicrobia
* Total Citation Counts Rankings
Rankings
97,848
136
6
Ranking Based On Selection: 6
Amira S Ashour
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,614
7,246
0.683
Biomedical Engineering
Medical Image Processing
Computer-aided Diagnosis System
Smart Antenna
DOA estimation& Localizatio
* Total Citation Counts Rankings
Rankings
102,067
145
7
Ranking Based On Selection: 7
Mohamed Labib Salem
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,236
4,110
0.402
* Total Citation Counts Rankings
Rankings
102,193
146
8
Ranking Based On Selection: 8
Yasser Abdou
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,226
2,558
0.250
* Total Citation Counts Rankings
Rankings
104,633
151
9
Ranking Based On Selection: 9
Abd El Fatah Abomohra
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,016
9,014
0.900
Phycology
Environmental Engineering
Biofuel
Waste recyclin
* Total Citation Counts Rankings
Rankings
108,264
157
10
Ranking Based On Selection: 10
Sameh Samir
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,720
9,459
0.973
Innovative biological wastewater treatment
Bioremediation
Hazardous waste Valorization
Biomas
Smart Institutional Plan
Powerful Insights + Smart Membership = Institutional Success
Unlock 360° Real-Time Institutional Analysis to identify your institution’s strengths and areas for improvement.
* Total Citation Counts Rankings
Rankings
126,353
195
11
Ranking Based On Selection: 11
Ahmed Abdel Azeem El Sebaii
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,473
3,897
0.460
* Total Citation Counts Rankings
Rankings
130,741
208
12
Ranking Based On Selection: 12
Mohamed Osman
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,215
5,040
0.614
* Total Citation Counts Rankings
Rankings
137,217
224
13
Ranking Based On Selection: 13
Nagy Torad
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,863
3,764
0.479
MesoMOFs
Nanoporous carbons
Gas sensors
Water treatment
Supercapacitor
* Total Citation Counts Rankings
Rankings
147,658
251
14
Ranking Based On Selection: 14
Mohamed A Amer
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,342
4,346
0.592
* Total Citation Counts Rankings
Rankings
152,425
259
15
Ranking Based On Selection: 15
Mohamed Abdelgaied
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,123
6,545
0.919
Renewable Energy
Solar Desalination
Air Conditioning
Solar Drye
* Total Citation Counts Rankings
Rankings
168,349
300
16
Ranking Based On Selection: 16
Gamal El Maghraby
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,474
2,937
0.454
drug delivery
Formulation science
Co-crystallization
liposomes
niosome
* Total Citation Counts Rankings
Rankings
208,137
413
17
Ranking Based On Selection: 17
Tamer Elsamahy
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,226
5,209
0.997
Microbiology
Environmental pollution
Biochemistr
* Total Citation Counts Rankings
Rankings
217,769
443
18
Ranking Based On Selection: 18
Medhat Elkelawy
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,988
4,774
0.957
Internal Combustion Engine
Combustion Systems
Energy Systems Analysi
* Total Citation Counts Rankings
Rankings
218,747
446
19
Ranking Based On Selection: 19
Yehia A G Mahmoud
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,964
3,986
0.803
Prof. of Microbiology (Mycology-Enzymology-Yeast-Molecular Biology-Drug development
* Total Citation Counts Rankings
Rankings
222,698
457
20
Ranking Based On Selection: 20
MR Elkadeem
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,870
4,807
0.987
Renewable Energy
Power System
Optimization
GIS
Desalinatio
* Total Citation Counts Rankings
Rankings
224,293
462
21
Ranking Based On Selection: 21
Kamal Shaltout
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,834
2,556
0.529
* Total Citation Counts Rankings
Rankings
228,924
480
22
Ranking Based On Selection: 22
Rafaat M Issa
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,730
715
0.151
* Total Citation Counts Rankings
Rankings
229,674
482
23
Ranking Based On Selection: 23
Ahmed M Ismail
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,714
4,554
0.966
Biomarkers
Clinical Biochemistry
Nephrology
AKI
Cellular Signallin
* Total Citation Counts Rankings
Rankings
237,039
511
24
Ranking Based On Selection: 24
Ehab Ellobody
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,558
2,089
0.458
* Total Citation Counts Rankings
Rankings
237,692
515
25
Ranking Based On Selection: 25
Ahmed Ahmed Abd Elaziz
Tanta University
Tanta, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,543
3,299
0.726